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Message-ID: <139940.18844.qm@web58102.mail.re3.yahoo.com>
Date: 2008-09-21T17:47:47Z
From: Megh Dal
Subject: Symmetric matrix

I have following matrix :

a = matrix(rnorm(36), 6)

Now I want to replace the lower-triangular elements with it's upper-triangular elements. That is I want to make a symmetric matrix from a. I have tried with lower.tri() and upper.tri() function, but got desired result. Can anyone please tell me how to do that?